Re: Easy VPNs?

2003-10-11 Thread Ralf-Philipp Weinmann
Ian Grigg [EMAIL PROTECTED] writes: I'm curious - my understanding of a VPN was that it set up a network that all applications could transparently communicate over. Port forwarding appears not to be that, in practice each application has to be reconfigured to talk to the appropriate port,

Re: Secure Science issues preview of their upcoming block cipher

2005-03-25 Thread Ralf-Philipp Weinmann
Jerrold Leichter wrote: I can come up with a cipher provably just as secure as AES-128 very quickly (Actually, based on the paper a while back on many alternative ways to formulate AES - it had a catchy title something like How Many Ways Can You Spell AES?, except that I can't find one like

CLC 2006 - Workshop on Codes and Lattices in Cryptography

2006-07-31 Thread Ralf-Philipp Weinmann
Apologies in advance if you receive multiple copies of this announcement. -Ralf CLC2006 - Workshop on Codes and Lattices in Cryptography https://clc2006.cdc.informatik.tu-darmstadt.de September 25th-27th, 2006

Re: [cryptography] Re: Why the exponent 3 error happened:

2006-09-19 Thread Ralf-Philipp Weinmann
On Sep 16, 2006, at 11:31 PM, Eric Young wrote: This is a question I would not mind having answered; while the exponent 3 attack works when there are low bits to 'modify', there has been talk of an attack where the ASN.1 is correctly right justified (hash is the least significant bytes),

Re: [cryptography] Re: Why the exponent 3 error happened:

2006-09-20 Thread Ralf-Philipp Weinmann
On Sep 20, 2006, at 3:10 PM, Kuehn, Ulrich wrote: -BEGIN CERTIFICATE- MIICgzCCAWugAwIBAgIBFzANBgkqhkiG9w0BAQUFADBoMQswCQYDVQQGEwJVUzEl MCMGA1UEChMcU3RhcmZpZWxkIFRlY2hub2xvZ2llcywgSW5jLjEyMDAGA1UECxMp U3RhcmZpZWxkIENsYXNzIDIgQ2VydGlmaWNhdGlvbiBBdXRob3JpdHkwHhcNMDYw

Re: Exponent 3 damage spreads...

2006-09-28 Thread Ralf-Philipp Weinmann
On Sep 25, 2006, at 10:29 AM, Simon Josefsson wrote: Leichter, Jerry [EMAIL PROTECTED] writes: I agree that there are two issues, and they need to be treated properly. The first - including data after the ASN.1 blob in the signature computation but then ignoring it in determining the

Re: padlocks with backdoors - TSA approved

2007-02-27 Thread Ralf-Philipp Weinmann
On Feb 26, 2007, at 21:20 , Hadmut Danisch wrote: Hi, has this been mentioned here before? Yes. It is old news, Bruce Schneier's Cryptogram mentioned it in April 2004, actually [1]. Never seen anything in real world which is such a precise analogon of a crypto backdoor for governmental

Re: WEP cracked even worse

2007-04-05 Thread Ralf-Philipp Weinmann
On Apr 4, 2007, at 03:38 , Dave Korn wrote: On 04 April 2007 00:44, Perry E. Metzger wrote: Not that WEP has been considered remotely secure for some time, but the best crack is now down to 40,000 packets for a 50% chance of cracking the key.

Philips/NXP/Mifare CRYPTO1 mostly reverse-engineered

2007-12-30 Thread Ralf-Philipp Weinmann
From http://cryptanalysis.eu/blog/2007/12/29/mifare-crypto1: MiFare’s CRYPTO1 stream cipher has captured my attention for a while. However, hardware reverse-engineering is not a field I actively engage in. So I was very happy when Karsten Nohl (University of Virginia), Starbug and Henryk